Automatic feed-regulator for steam-boilers.



R. MO R-ALI. AUTOMATIC FEED REGULATOR FOR STEAM BOILERS. APPLICATION FILED JULY 8,1918.

1,296,206. Patented Mar. 4,1919.

. jnv'emzor R Mora/h). By

PATET RICCIOTTI MOBALI, OF GENOA, ITALY, ASSIGHOR TO SOCIETA ANONIMA ITALIANA G10,

, ANSALDO & c.,

or GENOA, ITALY.

AUTOMATIC FEED-REGULATOR FFR S'JEEAlVlZ-BOILERS.

Specification of Letters Patent.

Application filed July 8, 1918. Serial No. 243,940.

To all whom it may concern:

Be it known that I, Riooro'rrl Moran, a subject of the King of Italy, and residing at Genoa, Italy, (Whose post-o oe address is Via Almeria, No. 25,) have invented certain new and useful Improvements in or Relating to Automatic Feed-Regulators for Steam-Boilers, of which the following is a specification.

This invention relates to an automatic feed regulator for steam boilers, comprising two parts, the first of which embodies a feeding valve, connected with a piston subjected to the pressure of the boiler and of the feed water, said valve being mounted on the lower part of the boiler, beneath the level of the water, and the second part being characterized by an automatically regulated apparatus arranged to one side and in a position corresponding to the level of the water within the boiler. The automatic regulator communicates freely with the boiler, and with the chamber of the piston, which is integral with the feeding valve.

For a more complete understanding of the invention, reference should be had to the accompanying drawing forming part of the present application.

The drawing shows in section the automatic feed regulator, according to the invention.

Referring to the drawing, the automatic regulator comprises two parts: the feeding A-, arranged below the level of valve 85 the water within the boiler, and containing a check valve -14-, rigidly connected to a piston 13. The valve casing is provided with a three way cock -12-. The second part of the apparatus of automatic regulation B- is mounted to one side of the boiler and communicates freely with the interior of the same. The apparatus B- is a device by means of which the equilibrium controlling the operation of the check valve 14 may be automatically controlled by variations of the level of the water within the boiler above and beneath a predetermined line.

The apparatus --B- is constituted by the lever (1, 2 and 3), fulcrumed on the pivot --4- and contained within the apparatus casing B, as shown by the accompanying drawin The oscil ations, to which the float -1- is subjected, by the variations of the level of are transmitted 5 linked the water within the boiler, to the needle 6- of the link to the lever 2,-.

The upper part of the casing B-- carries the valve casing C- within which are arranged the two communicating chambers 8- and 9. The lower of said chambers, communicates with the outside atmosphere by means of the tube 10; the upper chamber -9 communicating by means of the pipe 11- and of the three way cock 1-2- with the chamber within which operates the piston 13-. The communication between the chambers 8- and 9- is controlled by the valve 7-.

The needle -6 extends with its upper end, from the casing B into the chamher -8, to nearly touch the valve 7-,

reposlng on its seat.

A slight space or clearance is provided between the piston 13 and the wall of its chamber in order to permit feed water to leak past the piston and into the lower end ofthe piston chamber.

Supposing now that the feeding pump is sending water to the boiler, the level of the water within the same will rise above the predetermined level line. The water raises the float -1-'- and pushing the needle 6- against the valve 7- raises the valve from its seat, establishing communication between the chambers 8 and 9. This operation will establish, through the cook 12, the pipe 11- the chambers 8 and -9 and the tube 10, a communication between the space beneath the piston 13- and the outside atmosphere and the water beneath the piston 13 will be permitted to escape. The check valve -14 connected with the piston -13- will remain closed because of the boiler pressure exerted on the valve 14, and the feed water will be prevented from entering the boiler.

In this condition the feed is prevented, and consequently the level of the water within the boiler will gradually lower until the float 1-, lowers beneath the predetermined line. The needle 6--, following the movement of the float, allows the valve 7- to close on its seat. This operation will shut the communication between the chambers 8 and 9- and consequently close the communication between the chamber of the piston 13- and the atmosphere.

Patented Man 1, 1919.

Then the feed water accumulate and with the level of the water within-the boiler.

' The purpose of the cock 12 is to shut out the automatic re lator-B-, and allow the operation of t e feed valve -A to be controlled independently of the regulator -B-- and at the will of the operator.

The principal advantage gained by this construction resides in the placin of the chamber 9 in communication wit piston chamber 13, so that the feed water may exert pressure on the valve 7 and tend to keep the same closed. With this construction, should the float get out of order, the feed water pressure W111 keep the valve 7 closed,

and consequently the boiler will be kept supplied with water, and thedanger of leaving the boiler without water will be eliminated.

Having now particularly described the invention, and in what manner the same is to be performed, I declare that what I claim is;

1, The combination with a boiler, of a valve chamber mounted above the water level of the boiler and comprising upper and lower communicating compartments, a control valve mounted in the upper one of said compartments, a valve seat in the" upper compartment, a float located in theboiler and operatively connected to said valve, a piston and valve chamber arranged below the water level of the boiler and communicating with the interior of said boiler, a feedwater pipe connected to the piston and valve chamber for conveying feed water to the boiler, a feed water valve located in the piston and valve chamber and adapted to float operating the u per chamber control the passage of feed water to the boiler, a piston connected to said feed water valve and mounted in said valve and piston chamber, said piston and valve and piston chamber having a clearance space between the' 'same to permit feed water to pass to the underside of the piston, a pipe placing the underside of the piston and valve chamber in communication with the upper compartment of the control valve chamber to permit feed water to exert pressure on the control valve and force the same toward its seat, and a pipe placing the lower compartment of the control valve chamber in communica-. tion with the atmosphere. 4

2. In a feed water regulator the combination of a feed delivery valve, a balancing piston coupled to said valve, a cylinderin which said piston works, an outlet insaid cylinder beneath said piston, means for permitting a small proportion of the feed water to pass said balancing piston, a float box mounted on the boiler and in communication with the interior thereof, a balanced ed on the float box and provided with upper and lower communicating chambers, a con in the upper chamber closing the communication beambers, a conduit connecting with the outlet of the permit feed water pressure to trol valve mounted and normally tween the c cylin er to normally for the lower chamber, and means operatively connecting the float and control valve.

3. A feed water re lator comprising a feed water control val v e, a piston for aperating said valve, a regulator control valve, means for permitting feed water to close the regulator control valve, tively connected to the valve.

In testimony whereof I have hereunto signed my name in the presence of two witnesses.

RIOCIOTTI MORALI. Witnesses:

Nnoro Rnrn'rrn, GIOVANNI NATTINO.

regulator control in said box, a casing mounta and a float operaclose said control valve, an outlet 

